Ask a Mathematician

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Ask a Mathematician

polymath257 Offline

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#49

RE: Ask a Mathematician

February 4, 2022 at 11:29 am

(February 4, 2022 at 10:35 am)Fireball Wrote: Why "257"? Were the lower versions already used?

It is a Fermat prime. There are only 5 such known: 3, 5, 17, 257, 65537.

And yes, 3, 5, and 17 tend to be taken. Smile

Fermat primes have a very deep connection with which polygons can be constructed by straightedge and compass as well as other aspects of algebraic number theory.

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Messages In This Thread

Ask a Mathematician - by polymath257 - December 8, 2021 at 10:27 pm

RE: Ask a Mathematician - by The Valkyrie - December 8, 2021 at 10:30 pm

RE: Ask a Mathematician - by polymath257 - December 8, 2021 at 10:31 pm

RE: Ask a Mathematician - by Fireball - December 8, 2021 at 11:24 pm

RE: Ask a Mathematician - by Oldandeasilyconfused - December 8, 2021 at 11:04 pm

RE: Ask a Mathematician - by arewethereyet - December 8, 2021 at 11:23 pm

RE: Ask a Mathematician - by Oldandeasilyconfused - December 9, 2021 at 1:42 am

RE: Ask a Mathematician - by polymath257 - December 9, 2021 at 9:06 am

RE: Ask a Mathematician - by Deesse23 - December 9, 2021 at 3:18 am

RE: Ask a Mathematician - by The Valkyrie - December 9, 2021 at 3:21 am

RE: Ask a Mathematician - by vulcanlogician - December 10, 2021 at 2:34 am

RE: Ask a Mathematician - by polymath257 - December 10, 2021 at 9:19 am

RE: Ask a Mathematician - by purplepurpose - December 10, 2021 at 10:54 am

RE: Ask a Mathematician - by polymath257 - December 10, 2021 at 12:39 pm

RE: Ask a Mathematician - by no one - December 10, 2021 at 12:13 pm

RE: Ask a Mathematician - by onlinebiker - December 10, 2021 at 12:45 pm

RE: Ask a Mathematician - by polymath257 - December 10, 2021 at 2:42 pm

RE: Ask a Mathematician - by onlinebiker - December 10, 2021 at 3:39 pm

RE: Ask a Mathematician - by ABQ505 - December 10, 2021 at 1:01 pm

RE: Ask a Mathematician - by brewer - December 10, 2021 at 8:12 pm

RE: Ask a Mathematician - by Fireball - December 10, 2021 at 9:59 pm

RE: Ask a Mathematician - by polymath257 - December 11, 2021 at 2:05 pm

RE: Ask a Mathematician - by brewer - December 11, 2021 at 2:15 pm

RE: Ask a Mathematician - by arewethereyet - December 11, 2021 at 2:17 pm

RE: Ask a Mathematician - by Paleophyte - December 15, 2021 at 11:55 pm

RE: Ask a Mathematician - by Jehanne - December 16, 2021 at 7:47 am

RE: Ask a Mathematician - by GrandizerII - January 2, 2022 at 12:45 pm

RE: Ask a Mathematician - by polymath257 - January 2, 2022 at 3:15 pm

RE: Ask a Mathematician - by Jehanne - January 2, 2022 at 7:43 pm

RE: Ask a Mathematician - by Peebo-Thuhlu - January 2, 2022 at 12:55 pm

RE: Ask a Mathematician - by viocjit - January 3, 2022 at 9:36 am

RE: Ask a Mathematician - by polymath257 - January 3, 2022 at 9:57 am

RE: Ask a Mathematician - by viocjit - January 11, 2022 at 10:50 am

RE: Ask a Mathematician - by polymath257 - January 11, 2022 at 11:34 am

RE: Ask a Mathematician - by viocjit - January 17, 2022 at 12:05 am

RE: Ask a Mathematician - by polymath257 - January 17, 2022 at 11:21 am

RE: Ask a Mathematician - by viocjit - January 24, 2022 at 2:02 am

RE: Ask a Mathematician - by GrandizerII - January 24, 2022 at 8:43 am

RE: Ask a Mathematician - by polymath257 - January 24, 2022 at 11:37 am

RE: Ask a Mathematician - by Jehanne - January 19, 2022 at 4:28 pm

RE: Ask a Mathematician - by polymath257 - January 19, 2022 at 7:30 pm

RE: Ask a Mathematician - by Jehanne - January 19, 2022 at 7:43 pm

RE: Ask a Mathematician - by Spongebob - January 21, 2022 at 4:08 pm

RE: Ask a Mathematician - by no one - January 21, 2022 at 5:37 pm

RE: Ask a Mathematician - by polymath257 - January 21, 2022 at 9:10 pm

RE: Ask a Mathematician - by vulcanlogician - February 4, 2022 at 1:14 am

RE: Ask a Mathematician - by polymath257 - February 4, 2022 at 9:29 am

RE: Ask a Mathematician - by vulcanlogician - February 5, 2022 at 8:36 pm

RE: Ask a Mathematician - by Fireball - February 4, 2022 at 10:35 am

RE: Ask a Mathematician - by polymath257 - February 4, 2022 at 11:29 am

RE: Ask a Mathematician - by Abaddon_ire - February 5, 2022 at 10:53 pm

RE: Ask a Mathematician - by polymath257 - February 6, 2022 at 10:35 am

RE: Ask a Mathematician - by Abaddon_ire - February 6, 2022 at 3:41 pm

RE: Ask a Mathematician - by Fireball - February 6, 2022 at 12:06 am

RE: Ask a Mathematician - by Nay_Sayer - February 6, 2022 at 1:34 am

RE: Ask a Mathematician - by Jehanne - February 6, 2022 at 8:54 am

RE: Ask a Mathematician - by no one - February 6, 2022 at 9:27 am

RE: Ask a Mathematician - by BrianSoddingBoru4 - February 6, 2022 at 11:44 am

RE: Ask a Mathematician - by polymath257 - February 6, 2022 at 5:04 pm

RE: Ask a Mathematician - by Goosebump - February 10, 2022 at 4:01 am

RE: Ask a Mathematician - by Disagreeable - February 10, 2022 at 6:23 pm

RE: Ask a Mathematician - by polymath257 - February 11, 2022 at 11:06 am

RE: Ask a Mathematician - by Fireball - February 10, 2022 at 7:53 pm

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